1002220220077 has 2 divisors, whose sum is σ = 1002220220078. Its totient is φ = 1002220220076.

The previous prime is 1002220220039. The next prime is 1002220220107. The reversal of 1002220220077 is 7700220222001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 608245569801 + 393974650276 = 779901^2 + 627674^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002220220077 - 2²⁷ = 1002086002349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002220223077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501110110038 + 501110110039.

It is an arithmetic number, because the mean of its divisors is an integer number (501110110039).

Almost surely, 2^{1002220220077} is an apocalyptic number.

It is an amenable number.

1002220220077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002220220077 is an equidigital number, since it uses as much as digits as its factorization.

1002220220077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 25.

Adding to 1002220220077 its reverse (7700220222001), we get a palindrome (8702440442078).

The spelling of 1002220220077 in words is "one trillion, two billion, two hundred twenty million, two hundred twenty thousand, seventy-seven".